1.25×(8.1+0.7)简便算计

Question

1.25×(8.1+0.7)简便算计

Answer 1

原式等于
1.25×（8+0.8）=11
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Answer 2

1.25×(8.1+0.7)

=1.25x8.8
=1.25x8+1.25x0.8
=10+1
=11